Voltage divider calibration system and method for calibrating the voltage divider
A voltage divider, a calibrated technology, applied in the direction of instruments, measuring devices, measuring electrical variables, etc., to achieve the effect of convenient calibration work
Active Publication Date: 2016-02-17
STATE GRID CORP OF CHINA +2
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[0005] A technical problem to be solved by the embodiments of the present invention is to propose a voltage divider calibration system and a method for calibrating the voltage divider to solve the problem of simultaneously calibrating the high and low frequency response characteristics of the voltage divider in the power system
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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0027] In order to solve the problem of simultaneously calibrating the high and low frequency response characteristics of a voltage divider in a power system, the invention provides a voltage divider calibration system and a voltage divider calibration method.
[0028] figure 1 It is a structural sc...
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The invention discloses a voltage divider calibrating system and a method for calibrating a voltage divider and relates to the technical field of high voltage measurement. The method includes the following steps: generating exponential waves with the characteristics of the fast leading edge and the long wave tail, calibrating the high-frequency cut-off frequency of the voltage divider by the utilization of the rising edge part of the exponential waves, and calibrating the low-frequency cut-off frequency of the voltage divider by the utilization of the attenuating part of the exponential waves. The system comprises a waveform generating device and a calibrating device, wherein the waveform generating device is used for generating the exponential waves with the characteristics of the fast leading edge and the long wave tail, and the calibrating device is used for calibrating the high-frequency cut-off frequency of the voltage divider by the utilization of the rising edge part of the exponential waves and calibrating the low-frequency cut-off frequency of the voltage divider by the utilization of the attenuating part of the exponential waves. With the system and the method, the exponential waves with the characteristics of the fast leading edge and the long wave tail are generated, the high-frequency cut-off frequency of the voltage divider is calibrated by the utilization of the rising edge part of the exponential waves, the low-frequency cut-off frequency of the voltage divider is calibrated by the utilization of the attenuating part of the exponential waves, and thus simultaneous calibration of high-frequency and low-frequency response characteristics of the voltage divider is achieved.
Description
technical field [0001] The invention relates to the technical field of high voltage measurement, in particular to a voltage divider calibration system and a voltage divider calibration method. Background technique [0002] In order to make the measurement accurate and reliable, in addition to making the characteristic parameters and response time meet the requirements when designing the voltage divider, the characteristic parameters of the voltage divider must also be calibrated experimentally after the development of the voltage divider is completed. [0003] At present, the calibration of the voltage divider generally uses a square wave signal. This square wave signal is generally formed by forming a line through a mercury switch or a gas spark switch. Its rising edge is fast and can be used to calibrate the high frequency response characteristics of the voltage divider; The frequency sweep method is usually used to calibrate the low frequency performance of the voltage di...
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IPC IPC(8): G01R35/02
Inventor 丁卫东王承玉龚小林王绍武戴敏
Owner STATE GRID CORP OF CHINA